I used some of this stuff to clean out and sanitize a used fridge I bought that smelled awful ($210 for a full-size fridge for our basement, including delivery and placement in our house, couldn't turn it down!) -- I sprayed the entire inside of the fridge, left it overnight, and rinsed it out and took the towel to it to dry it off. That towel *absolutely* has bleach stains all over it now. The fridge smelled STRONGLY of chlorine after sitting overnight, to the point that after rinsing it out I had to open it up and set a box fan blowing into the fridge to help blow out the chlorine smell.
I've also used this stuff to sanitize the jetted tub in our master bath. It was spraying out lots of black gunk (mold/mildew built up in the jet plumbing of the tub from not running it in a long time) so I filled it with super-hot water, put in
6oz of of this 10% chlorinating liquid, and ran the jets for about 20 minutes. According to Pool Math that brought the FC level to something like...50ppm.

Our bathroom smelled
incredibly strongly of chlorine after running the tub for just that 20 minutes. Almost made my eyes water...from just 6oz.
NOTE: a "strong chlorine smell" or lack thereof when opening the bottle might not be indicative of actual potency. You'll need to run a concentration test to verify actual chlorine content.
Thankfully I haven't had a bad experience with this product yet. It's done a great job of keeping my pool clean and sparkling.